FreeCalypso > hg > freecalypso-tools

annotate loadtools/flash.h @ 517:809829dbc58a

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new flash support documented
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 01 Jun 2019 06:46:46 +0000
parents 0dd2c87c1b63
children 9c5b0629e346
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1 /* this header file contains definitions for fc-loadtool flash support */
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2
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3 /* global configuration */
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4 #define FLASH_GLOBAL_CFG_NONE 0
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5 #define FLASH_GLOBAL_CFG_SINGLE_4M 1
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6 #define FLASH_GLOBAL_CFG_SINGLE_8M 2
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7 #define FLASH_GLOBAL_CFG_DUAL_8M 3
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9 /*
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10 * The following structures represent an "abstract"
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11 * description of flash devices.
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12 *
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13 * A "region" is a consecutive group of erase units of the same size.
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14 */
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16 struct flash_region_desc {
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17 uint32_t sector_size;
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18 unsigned nsectors;
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19 };
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21 #define CFI_MAX_REGIONS 4
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23 /*
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24 * The info in struct flash_geom can be either
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25 * gathered from CFI or hard-coded.
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26 */
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27 struct flash_geom {
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28 uint32_t total_size;
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29 unsigned nregions;
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30 struct flash_region_desc regions[CFI_MAX_REGIONS];
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31 unsigned total_sectors;
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32 };
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33
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34 struct cfi_check {
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35 int offset;
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36 uint8_t expect_val;
0
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37 };
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39 struct flash_device {
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40 char *name;
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41 struct cfi_check *cfi_table;
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42 int required_global_config;
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43 struct flash_geom *bank_geom[2];
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44 struct flash_cmdset *cmdset;
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45 };
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47 /* the following structures describe flash banks as accessible to us */
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48
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49 struct sector_info {
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50 uint32_t start;
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51 uint32_t size;
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52 };
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53
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54 struct flash_cmdset {
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55 char *cmdset_name;
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56 int (*reset_cmd)();
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57 int (*status_cmd)();
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58 int (*unlock_sector)();
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59 int (*erase_sector)();
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60 int (*prep_for_program)();
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61 char *loadagent_setbase_cmd;
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62 char *loadagent_program_cmd;
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63 int needs_unlock;
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64 };
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65
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66 struct flash_bank_info {
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67 uint32_t base_addr;
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68 struct flash_device *device;
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69 struct flash_geom *geom;
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70 struct flash_cmdset *ops;
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71 struct sector_info *sectors;
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72 int detect_done;
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73 };